Just released a new rails plugin, Dynamic File Store which you can read more about at Google Code.
Example usage scenario:
You have a “Popular Posts” partial included on each page, which should be cached for 12 hours; a “Recent Comments” partial which can be refreshed every 30 minutes; and a “Tag Cloud” which only needs to be refreshed once per day.
Dynamic File Store, an alternative to the default Rails fragment cache store, simplifies the process of defining these cache fragments, alleviating you from ever having to think about manually expiring fragments.
View installation & usage notes at google code.
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